EP3827237A1 - Bremszylinderanordnung und bremssystem - Google Patents
Bremszylinderanordnung und bremssystemInfo
- Publication number
- EP3827237A1 EP3827237A1 EP19742345.2A EP19742345A EP3827237A1 EP 3827237 A1 EP3827237 A1 EP 3827237A1 EP 19742345 A EP19742345 A EP 19742345A EP 3827237 A1 EP3827237 A1 EP 3827237A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- brake cylinder
- bar
- cylinder arrangement
- reducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 230000004048 modification Effects 0.000 claims description 25
- 238000012986 modification Methods 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
- B60T8/3255—Systems in which the braking action is dependent on brake pedal data
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/30—Sensors
- B60Y2400/306—Pressure sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/81—Braking systems
Definitions
- the invention relates to a brake cylinder arrangement, as is used, for example, in typical motor vehicles as part of a brake system.
- the invention further relates to a brake system for a motor vehicle with such a brake cylinder arrangement.
- a brake cylinder arrangement typically has at least one brake cylinder. This is used to give the driver the opportunity to generate pressure in the brake system by means of a connected brake pedal.
- This pressure can, for example, act on a simulator, be electronically detected and then converted into actual braking, or it can also act directly on wheel brakes. The latter can be the case in particular in the case of a hydraulic fallback level or other emergency functions.
- a pressure sensor is typically used to monitor the pressure in a brake cylinder.
- a high resolution is necessary in a low pressure range up to about 70 bar, but in principle a significantly higher pressure range up to about 280 bar, for example, must be monitored in order to prevent damage to the brake cylinder by the initiation of emergency measures.
- two sensors can be used for this, but in particular the high-resolution pressure sensor for the lower pressure range must be protected against the high pressures. This has proven to be complex and costly.
- the invention relates to a brake cylinder arrangement.
- the brake cylinder arrangement has a brake cylinder, a pressure sensor and a pressure reducer.
- the brake cylinder is connected to the pressure sensor via the pressure reducer in order to sense a pressure in the brake cylinder.
- the pressure reducer preferably conducts the pressure from the brake cylinder to the pressure sensor with a first modification factor in a first input pressure range, which ranges from 0 bar to a predetermined pressure threshold value, and preferably conducts in a second input pressure range, which comprises pressures greater than the predetermined pressure threshold value , the pressure, insofar as it exceeds the pressure threshold, from the brake cylinder to the pressure sensor with a second modification factor plus the pressure passed on at the pressure threshold.
- the pressure reducer By using the pressure reducer, it is sufficient to use a pressure sensor which can monitor the entire required pressure range and can provide a sufficiently high resolution in a low pressure range.
- the pressure reducer can be configured in a suitable manner, in particular by choosing the two modification factors. Suitable possible designs will be described below. Forwarding with a modification factor is understood in particular to mean that the pressure before the forwarding is multiplied by the factor. If the first modification factor is 0.7, for example, an input pressure of 1 bar is passed on as 0.7 bar. If the first modification factor is 1, for example, the pressure in the first input pressure range is passed on unchanged.
- the second input pressure range only the pressure which exceeds the pressure threshold value is multiplied by the second modification factor.
- the predetermined pressure threshold value preferably has a value between 60 bar and 80 bar, or a value of 70 bar. Such a value is suitable for typical master brake cylinders or brake systems.
- the first modification factor preferably has a value of 1. This enables a direct linear transmission of the pressure from the brake cylinder to the pressure sensor, so that it can be detected without distortion.
- the second modification factor preferably has a value less than 1.
- the pressure reducer is preferably a hydraulic pressure reducer. Such designs are known and have proven to be advantageous for the functionality required here.
- the brake cylinder can in particular be a master brake cylinder of a motor vehicle.
- the brake cylinder arrangement described here can be used particularly advantageously.
- the pressure sensor is preferably configured to trigger a burst protection function when the pressure reaches a predetermined safety threshold.
- the predetermined safety threshold which is defined in particular on the pressure sensor, can be determined in particular taking into account the second modification factor and also the pressure threshold value and the first modification factor.
- the burst protection function can, for example, enable a pressure release from the brake cylinder in order to prevent destruction of other components.
- the safety threshold value preferably corresponds to an inlet pressure of the pressure reducer between 260 bar and 280 bar, or 270 bar. Such values have proven to be advantageous for typical applications.
- the second modification factor as well as the pressure threshold and the first modification factor are typically to be taken into account here.
- the invention further relates to a brake system for a motor vehicle, the brake system having a brake cylinder arrangement according to the invention.
- the brake system has a number of brakes which are connected to the brake cylinder of the brake cylinder arrangement. This can be advantageous actuation of the brakes.
- the advantages described above can be achieved with the brake system according to the invention.
- Fig. 2 a transmission characteristic of that shown in Fig. 1
- the brake system 1 shows a brake system 1 according to an embodiment of the invention.
- the brake system 1 has a Bremszylinderan arrangement 5, a brake pedal 15 and a number of brakes 40. It should be understood that these components are only shown schematically in a block diagram here.
- the brake cylinder arrangement 5 has a brake cylinder 10, which is connected to the brake pedal 15. As a result, a driver can apply a pressure in the brake pedal 15 Generate brake cylinder 10. The brakes 40 can thus be actuated.
- the brake cylinder arrangement 5 also has a pressure reducer 20 and a pressure sensor 30. As shown, the pressure sensor 30 is connected to the brake cylinder 10 via the pressure reducer 20.
- the pressure reducer 20 has the characteristic curve shown in FIG. 2.
- the inlet pressure pi is shown on the horizontal axis and the outlet pressure p a on the vertical axis.
- the inlet pressure pi is therefore the one that prevails in the brake cylinder 10.
- the outlet pressure p a is that which is passed on to the pressure sensor 30.
- the pressure transmission through the pressure reducer 20 is initially unchanged up to a predetermined pressure threshold value p s , ie a first modification factor of 1 is applied.
- the inlet pressure pi is equal to the outlet pressure p a .
- the curve shown is flatter, ie a second modification factor less than 1 is used.
- the outlet pressure p a is thus weakened compared to the inlet pressure pi. It should be understood that here the at the predetermined pressure threshold value s p pressure reached as a reference is used, that is, the pressure threshold value p s excess pressure fraction of the inlet pressure p ⁇ is multiplied by the second modification factor and the output pressure P A is added at the pressure threshold.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018212320.9A DE102018212320A1 (de) | 2018-07-24 | 2018-07-24 | Bremszylinderanordnung und Bremssystem |
PCT/EP2019/069305 WO2020020732A1 (de) | 2018-07-24 | 2019-07-17 | Bremszylinderanordnung und bremssystem |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3827237A1 true EP3827237A1 (de) | 2021-06-02 |
EP3827237B1 EP3827237B1 (de) | 2023-11-15 |
Family
ID=67390071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19742345.2A Active EP3827237B1 (de) | 2018-07-24 | 2019-07-17 | Bremszylinderanordnung und bremssystem |
Country Status (6)
Country | Link |
---|---|
US (1) | US12012085B2 (de) |
EP (1) | EP3827237B1 (de) |
KR (1) | KR102491406B1 (de) |
CN (1) | CN112368557B (de) |
DE (1) | DE102018212320A1 (de) |
WO (1) | WO2020020732A1 (de) |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5540469B2 (de) * | 1973-09-28 | 1980-10-17 | ||
GB1561386A (en) | 1976-11-20 | 1980-02-20 | Automotive Prod Co Ltd | Vehicle fluid pressure braking system |
DE3440599C2 (de) * | 1984-11-07 | 1994-05-26 | Teves Gmbh Alfred | Kraftfahrzeug-Bremsanlage |
EP0420949B1 (de) * | 1989-04-22 | 1994-01-12 | ITT Automotive Europe GmbH | Schlupfgeregelte bremsanlage, insbesondere für kraftfahrzeuge |
DE4029793C2 (de) * | 1990-09-20 | 1999-05-06 | Bosch Gmbh Robert | Hydraulische Fahrzeugbremsanlage |
US5307684A (en) * | 1992-06-02 | 1994-05-03 | Viatran Corporation | Stop mechanism for a diaphragm pressure transducer |
JP2001033335A (ja) * | 1999-07-16 | 2001-02-09 | Denso Corp | 圧力検出装置およびその製造方法 |
JP4823529B2 (ja) * | 2005-01-19 | 2011-11-24 | 本田技研工業株式会社 | ブレーキ装置 |
JP4749950B2 (ja) * | 2006-06-27 | 2011-08-17 | 本田技研工業株式会社 | 車両用ブレーキ装置 |
JP4506793B2 (ja) * | 2007-07-17 | 2010-07-21 | トヨタ自動車株式会社 | ブレーキ制御装置 |
DE102010005091B4 (de) * | 2010-01-18 | 2013-08-08 | Siemens Aktiengesellschaft | Bremsanordnung eines Schienenfahrzeugs |
JP2011033335A (ja) | 2010-10-15 | 2011-02-17 | Mitsubishi Electric Corp | 加熱調理器 |
DE102011085329A1 (de) * | 2011-10-27 | 2013-05-02 | Continental Teves Ag & Co. Ohg | Optischer Druckfühler und Verfahren zum optischen Erfühlen eines Drucks |
KR101392224B1 (ko) | 2012-09-27 | 2014-05-08 | 주식회사 만도 | 브레이크 시스템 |
US9164003B2 (en) | 2012-10-11 | 2015-10-20 | Honeywell International Inc. | Force sensor with mechanical over-force transfer mechanism |
DE102013209006A1 (de) * | 2013-05-15 | 2014-11-20 | Robert Bosch Gmbh | Steuervorrichtung für ein bremskraftverstärktes autonomes Bremssystem eines Fahrzeugs und Verfahren zum Betreiben eines bremskraftverstärkten autonomen Bremssystems eines Fahrzeugs |
DE102013213227A1 (de) * | 2013-07-05 | 2015-01-08 | Continental Teves Ag & Co. Ohg | Druckbegrenzerventil, Membranmodul, Kalibrierverfahren sowie Verwendung des Membranmoduls |
-
2018
- 2018-07-24 DE DE102018212320.9A patent/DE102018212320A1/de active Pending
-
2019
- 2019-07-17 WO PCT/EP2019/069305 patent/WO2020020732A1/de unknown
- 2019-07-17 CN CN201980041115.6A patent/CN112368557B/zh active Active
- 2019-07-17 EP EP19742345.2A patent/EP3827237B1/de active Active
- 2019-07-17 KR KR1020207036519A patent/KR102491406B1/ko active IP Right Grant
-
2021
- 2021-01-22 US US17/155,329 patent/US12012085B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20210139004A1 (en) | 2021-05-13 |
EP3827237B1 (de) | 2023-11-15 |
KR102491406B1 (ko) | 2023-01-20 |
KR20210009380A (ko) | 2021-01-26 |
US12012085B2 (en) | 2024-06-18 |
CN112368557B (zh) | 2022-10-14 |
WO2020020732A1 (de) | 2020-01-30 |
DE102018212320A1 (de) | 2020-01-30 |
CN112368557A (zh) | 2021-02-12 |
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